Muffler.



T. DONHUE.l

MUIFLEB.

APPLIOA'MON FILED Nov. s, 1910.

Patented may 16, 1911 @murmur clalup the-heads A, A upon the opposite Bisi' AVAILABLE cop-' UNiTED srArns r i-\. jninfr onirica.

THOMAS DONOHUE, OF 'lRiEIWlOLN,lll/[llCHIGAN.`

Be it known that I, 'lnoiias DoNoni'i-, a citizen of the UnitedStates of .'Macrica, residing at Trenton, in the count)v of Wayne and State of Michigan, have invented eertain new-and useful lnlprovements in Mui"- tlers. of which the, followingr a` specitieation, reference being had therein to the accompanying drawings.

This invention relates to lnull'lers -for explosive enginesand consists in the matters' hereinafter se't. forth. and more. part ieularly pointed out in the appended claims.

-The object ot .my invention 1s to malte a inutl'ler which. will etleetuallj7 inutllethe e.\'-l haast of an explosive engi ne andawhich shall he cheap to manufacture and easy to assoluble. all as inorei'ull;l lureinaiter` .set forth andshown iuthe aeconlpanyiug drawings, in which- V Figure 4l is a vertical central section through a uiutller euihodving' the features ot iny invention; Fig. 2, a plan view of Fig. 1 and Fig. 8, a section on the line of Fig. 1.

As shown in the. drawings A, A indicate the heads ot the uiutller, the head AA being provided with an internally threaded inlet nipple 'B and the head being` provided with an internally threaded boss or outlet (l tor the exhaust. to both ol which suitable pipe. connect'ioiis may be inade. Y

l) is-a sheet metal drinn or easing titting within the standingv flanges ll on the heads, and l" are clamping` rods or bolts which ends ol theY druiu to torni a unit structure. G is a bolt or rod passing through the `lougitruliinil axis ot' the inutile" and upon which is looseljY nlounted a dill'usine uiein ber shown herein as a propeller wheel ll between the adjustable collars l on the boltI or `rod (il. v v l J is an inwardly projecting nozzle 'forinina continuation of the nipple l and so :n'rane'ed that the inconnue' exhaustor Spent charge. will be directed against the dill'user which will he caused to rotate thereby, and therelore ditl'usel the exhaust into au opeuing' ol'` larger area than that ot' the now/.le J.

l( is a coneI shaped restricting' halile iting; within the druul l) and slniported on a bracket' l1 adjustably mounted on the rod (t. so as to increase or reduce the capacity ol' the recei\'ingsjjiace between the upper curl ot said baille and the. underside ol the, cap l MUFFLER.

-9{) ?.4 -1L Specification of Letters Patent.

Application filed November '4, 1910. Serial No1-590,626.

To all whom it may concern: s

The exhaust a'lter being praeticallj7 dilt'used into the large openingY of the cone-shaped battle, will then be gradually contracted again and tinalljv be discharged against another spreading device M whereby the eX haust is deflected backward over the outside of the cone-battle, and which is herein shown as a semi-circular deftectoror battle also adjustahly mounted on the rod G and pro vided with a serrated edge whereby the discharge 'from the diffuser into the interior of the drinn willy be rendered less abrupt lals comparedv with the results produced by .a solid edge so that the spent charge'will be atenten May 16. 191'1.

forced by the propeller wheelH through the small endof the cone K, over the serrated edge of' the baille M and out through the nipple C.

N is a suitable drain opening,r to be used where water is allowed to run into the eX- haust pipe, inl which case the niutller is to be placed iu `a. horizontalposition.

lt will thus be seen that a very simple niutller is inadewhich will eteetually inutile the charge and, which may be readily adjusted to suit the particular requirements. Tt is also obvious that the mufl'ler may be Inadejot anv length bv simply using a y longer drum and rods or bolts.

lVhat I claim is t,

1. A mutlier comprising a' casingy havingl an inlet andan outlet, a diffusing member in the easingY adjacent the inlet and adapted to di'use the exhaust passing through the inlet` a restricting battle having its inlet end adjacent the. dittusing member and `its outlet end directed toward tho casingoutlet anda detlector disposed between the outlet end of the baille and the outlet and having a concave face opposite the outlet Opening of the restricting' baille.

Q. A niutlter comprlslnga casing havlng an inlet opening' and a discharge opening, a

j rotatable diffusing member adjustable longitudinally of the casing, and adapted t0 be rotated by the exhaust entering the casing throng-h the, inlet, a stationary restrict-ing ballleV having' a longitudinal opening with a wide inlet adjacent the rotatable member, and also havingr arestricted outlet 4tdisch'ar iuretoward the easing outlet, and a deflector haring a concave tace opposingr the outlet ot' the stationary battle.

A inulller comprising a substantially cylindrical easing having an Ainlet at one end and an outlet: at thel other, a diffusing Wheel longitudinally adjustable in the easing and adapted to be rotated by exhaust entering through the easing inlet, a conoidal baille adjustable longitudinally in the casing with ilI larger end adjacent the diffusing Wheel, and a deflector having a concave face opposing.r the smaller outlet of the conoidal baille.

t. .t inutller comprising a substantially vliiulrieal casing having an inlet opening at one end and a discharge opening at the other, an axially disposed rodextending through the casing, a diffusing wheel rotatable and adjustable longitudinally on the rod and adapted to be operated by exhaust entering the inlet` a colloidal hollow baille longitudinally adjustable on the rod with its larger end substantially concentric with the diffusing wheel, and a deflector longitudinally adjustable on the rod and having a concave face opposing the outlet end of the eonoidal baille.

3. niulller comprising a substantially cylindrical casing havingr an inlet openinrr at one end and a dischaijfeopening at theol ier.

an axially disposed rodextending through the easing. a ditl'using wheel rotatable and adjustable long filluliually on the rod adapted to be oper-anal b v exhaust entering the casing inlet. a conoidal hollow baille longitudinally adjustable on tlu rod with itsl larger aal substantially concentric with the diffusing wheel. and a substantiall)v heinispherical letlcr'tor adjustable longitudinally on the rod with a serrated edge substantially concentric with the smaller end of the eonoidal baille.

G. .l mutller comprising a substantially cylindrical casingv` flanged heads closing each and of the casing, rods exterior to the casing for clamping the casing and heads together, an axially disposed rod passing through the casing and heads, an inlet nipple through one head, an outlet boss in the other head, a diffusing wheel rotatable on the axial rod adjacent the inlet nipple, longitudinally adjustable means on the rod determining the position of the wheel, a conoidal lnutller adjustable longitudinally on the axial rod with its larger end fitting the casing eoncentrically with the wheel, and a substantially hemispherieal hollow deflector adjustable longitudinally on the axiallrod with a serrated margin substantially concentri?i with the smaller end of the conoidal ba e.

7. A lmutllcrcomprising a substantially' cylindrical casing closed at each end and provided at one end with an inlet nipple having a discharge nozzle extending obliquely into the casing, and provided with an outletl at its other end, a diffusing wheel longitudinally adjustable in the casing, and

provided with blades against which exhaust,

entering from the nipple impinges, a conoidal baille longitudinally adjustable in the casing with its larger end litting the easing coneentrically around the diffusing wheel, and a concave defleeto adjustable longitudinally of the casingbetween the outlet of the latter and the smaller end of the. conoidal baille. and havingr a serrated margin substantially concentric with the smaller end of the conoidal baille. ln testimony whereof lA atlix my signature iii presence of two witnesses. i

' THOMAS DONOHUE.

ll'itnesses: Y

ANNA M. Donn, R. S'riciixar. 

